Brigantedinium majusculum is the cyst of Protoperidinium sinuosum (Protoperidiniaceae, Dinophyceae)

Title
Brigantedinium majusculum is the cyst of Protoperidinium sinuosum (Protoperidiniaceae, Dinophyceae)
Author(s)
LIZHUN; 김은송; 신현호
KIOST Author(s)
Shin, Hyeon Ho(신현호)
Publication Year
2016-02-22
Abstract
Two morphologically distinct species Brigantedinium majusculum and Trinovantedinium applanatum have been suggested as a cyst stage of Protoperidinium pentagonum however, the cyst-theca relationships are still virtually undefined. In this study, we re-examined the motile stage of B. majusculum via thecal plate analysis together with a molecular phylogenetic analysis based on partial large subunit ribosomal DNA gene sequences. The morphological features of motile cells germinated from B. majusculum were identical to those of Pr. sinuosum, and the molecular phylogenetic analysis showed that the germinated cells and B. majusculum are closely related to Pr. pentagonum and Pr. latissimum as a sister group. Additionally, the high sequence divergences were observed between the germinated cells and B. majusculum as well as Pr. pentagonum and Pr. latissimum (18.0%-19.5% according to P-values and 20.7%-22.9% according to Kimura-2-parameter values). Based on these results, our study indicates that B. majusculum should be accepted as the cyst of Pr. sinuosum.tudy, we re-examined the motile stage of B. majusculum via thecal plate analysis together with a molecular phylogenetic analysis based on partial large subunit ribosomal DNA gene sequences. The morphological features of motile cells germinated from B. majusculum were identical to those of Pr. sinuosum, and the molecular phylogenetic analysis showed that the germinated cells and B. majusculum are closely related to Pr. pentagonum and Pr. latissimum as a sister group. Additionally, the high sequence divergences were observed between the germinated cells and B. majusculum as well as Pr. pentagonum and Pr. latissimum (18.0%-19.5% according to P-values and 20.7%-22.9% according to Kimura-2-parameter values). Based on these results, our study indicates that B. majusculum should be accepted as the cyst of Pr. sinuosum.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/24947
Bibliographic Citation
Ocean Science Meeting, pp.92, 2016
Publisher
AGU,
Type
Conference
Language
English
Publisher
AGU,
Related Researcher
Research Interests

Marine bioresource,Marine phytoplankton diversity / ecology,Marine micropaleontology,해양생물자원,해양식물플랑크톤 다양성/생태학,해양미고생물학

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